PB SWISS TOOLS Hex Allen Key Wrench, with Retaining Ring, Rainbow

This model is equipped with a hold ring on the ball. This ring provides easy access to intricate locations without having to hold the screws with your fingers. Nickel chrome plated for rust resistance and long life. The edges are lightly trimmed so you can easily insert a wrench into the screw holes. The wrench is marked with a 5-digit production number, which allows you to trace back to the manufacturing process at the raw material stage. The hardness is as high as HRC59, and it is made tough, so it has excellent abrasion resistance and durability, and high torque can be applied. It is possible to turn an angled screw with a precisely made ball point. (OK up to an angle of 30 °)
* The ball cannot be fully tightened.